4218997409 has 8 divisors (see below), whose sum is σ = 4726936128. Its totient is φ = 3731790960.

The previous prime is 4218997403. The next prime is 4218997411. The reversal of 4218997409 is 9047998124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4218997409 - 2¹² = 4218993313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4218997403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182637 + ... + 5183450.

It is an arithmetic number, because the mean of its divisors is an integer number (590867016).

Almost surely, 2^4218997409 is an apocalyptic number.

It is an amenable number.

4218997409 is a deficient number, since it is larger than the sum of its proper divisors (507938719).

4218997409 is a wasteful number, since it uses less digits than its factorization.

4218997409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366135.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 4218997409 is about 64953.8098112805. The cubic root of 4218997409 is about 1615.8576036639.

The spelling of 4218997409 in words is "four billion, two hundred eighteen million, nine hundred ninety-seven thousand, four hundred nine".